Search found 478 matches
- Wed Sep 08, 2021 8:50 pm
- Forum: Protective Devices
- Topic: RCD Feeding RCD discrimination
- Replies: 5
- Views: 6683
Re: RCD Feeding RCD discrimination
You can, but what's the point? You're correct you will have no discrimination so it'll be luck of the draw what trips and what doesn't so you'll be putting yourself in a situation where enough leakage fault on either is just as likely to take out both as it is to take out the one with the leakage In...
- Wed Sep 01, 2021 11:35 am
- Forum: Generators and Solar
- Topic: Where does mains parallel generation stop? Grid tied PV
- Replies: 3
- Views: 9097
Re: Where does mains parallel generation stop? Grid tied PV
Just so I'm understanding correctly, you're saying essentially it starts at the inverter and including the inverter but not any of the backup supplies (as they don't supply parallel with anything else) etcetc Just trying to understand the final statement, so all the parts up to connection are "suppl...
- Wed Sep 01, 2021 8:22 am
- Forum: Generators and Solar
- Topic: Where does mains parallel generation stop? Grid tied PV
- Replies: 3
- Views: 9097
Where does mains parallel generation stop? Grid tied PV
PEW regarding mains parallel generation systems and PV installations are high risk 5033 clearly states that the PV part is "This Standard sets out general installation and safety requirements for photovoltaic (PV) arrays, including d.c. array wiring, electrical protection devices, switching and eart...
- Tue Aug 31, 2021 8:18 am
- Forum: Inspection
- Topic: Solar Off Grid ELV - High risk or not?
- Replies: 3
- Views: 4586
Re: Solar Off Grid ELV - High risk or not?
Just a further point in regards to this I believe most PCEs these days are transformerless which as discussed above makes the views of this not being PEW less and less of a logical argument, there is no physical separation in the PCE between input and output which even moreso feels like the ELV side...
- Tue Aug 31, 2021 7:35 am
- Forum: Standards and Legislation
- Topic: Standards - Cited vs Current
- Replies: 2
- Views: 2758
Standards - Cited vs Current
I'm just curious on opinions on the best advice to give others around this Many of our cited versions are sometimes 1 or even 2 versions behind, in some cases there probably isn't significant issues, in others maybe there is Cited versions are law, and obviously we must meet the requirements of thes...
- Sun Aug 29, 2021 12:01 pm
- Forum: Earthing and Bonding
- Topic: 5.3.5.1 MEN location exceptions
- Replies: 9
- Views: 8029
Re: 5.3.5.1 MEN location exceptions
Understood, thank you Alec Further question, can we supply a separate MEN installation in an outbuilding from a non-linked subboard? I always thought this was ok but does that conflict with the TN-C-S way of thinking going back to a combined PEN after they have already been split? For example, mains...
- Sun Aug 29, 2021 11:50 am
- Forum: General Electrical Discussions
- Topic: Socket outlet on 1mm2, and other sins.
- Replies: 15
- Views: 12536
Re: Socket outlet on 1mm2, and other sins.
How does one even become an "expert" or even assist in these investigations?
- Sun Aug 29, 2021 8:38 am
- Forum: Earthing and Bonding
- Topic: 5.3.5.1 MEN location exceptions
- Replies: 9
- Views: 8029
Re: 5.3.5.1 MEN location exceptions
Just for confirmation
The the switchboard the MEN has moved from is still the main switchboard, it just becomes a main switchboard without a MEN connection inside and still meets all other requirements?
The the switchboard the MEN has moved from is still the main switchboard, it just becomes a main switchboard without a MEN connection inside and still meets all other requirements?
- Sat Aug 28, 2021 3:30 pm
- Forum: Testing & Verification
- Topic: Procedural Document
- Replies: 4
- Views: 5481
Re: Procedural Document
Sorry mate, I don't under what you're asking
- Fri Aug 27, 2021 12:09 pm
- Forum: Selection and Installation of Wiring Systems
- Topic: Ring circuits - Are they a complaint method?
- Replies: 2
- Views: 2179
Ring circuits - Are they a complaint method?
I saw a question the other day that I didn't know the answer too and that was "are ring circuits legal in NZ"? Now I don't know much about ring circuits, other than being big in UK and can have higher overcurrent protection levels and that also UK has fuses in there plug tops (feel like there was so...
- Tue Aug 24, 2021 3:04 pm
- Forum: Generators and Solar
- Topic: Solar Inverter RCD protection
- Replies: 5
- Views: 5701
Re: Solar Inverter RCD protection
You are correct, it's common over in Australia in those scenarios
But my question was in regards to 5.3.4 of 4777.1 2005 and the meaning behind this clause, whether it was permitted to have RCD protection on the supply to the inverter
But my question was in regards to 5.3.4 of 4777.1 2005 and the meaning behind this clause, whether it was permitted to have RCD protection on the supply to the inverter
- Tue Aug 24, 2021 10:34 am
- Forum: Generators and Solar
- Topic: Solar Inverter RCD protection
- Replies: 5
- Views: 5701
Re: Solar Inverter RCD protection
Alec, I know you probably don't want to explain yourself twice but would you mind going a little more in depth into your reasoning, incase the response elsewhere isn't seen
Or shall I copy and paste the original here?
Or shall I copy and paste the original here?
- Tue Aug 24, 2021 10:00 am
- Forum: Generators and Solar
- Topic: Solar Inverter RCD protection
- Replies: 5
- Views: 5701
Solar Inverter RCD protection
I recently made a post elsewhere that touched on this but thought this deserved a dedicated thread 4777.1:2016 allows such an arrangement and is common is Australia Screenshot_20210824-095339_Google PDF Viewer.jpg But although looking to a more up to date standard is a good idea, you have to make su...
- Sun Aug 22, 2021 4:20 pm
- Forum: Forum User Guidelines
- Topic: Marley Orannge ducting solvent
- Replies: 4
- Views: 9779
Re: Marley Orannge ducting solvent
Just normally the Marley PVC clear solvent, green label, I'd never known it to be suitable for one colour of conduit and not another
- Sun Aug 22, 2021 12:01 pm
- Forum: Forum User Guidelines
- Topic: Marley Orannge ducting solvent
- Replies: 4
- Views: 9779
Re: Marley Orannge ducting solvent
I'd say best to contact the manufacturers of the ducting and the solvent, they'll be able to inform you straight away what there products are suitable for
- Sat Aug 21, 2021 8:09 pm
- Forum: Standards and Legislation
- Topic: AS/NZS 3000:2007 4.10 (Heating Cables) + NZS6110
- Replies: 3
- Views: 3265
Re: AS/NZS 3000:2007 4.10 (Heating Cables) + NZS6110
I'd definitely class under tile heating as under floor heating In regards to 4.10.5, I can't speak for your particular situation but all the ones I've done have had a braided screen under the outer insulation, they are normally flexible from what I've dealt with Because NZS6110 is cited in 3000 and ...
- Sat Aug 21, 2021 2:15 pm
- Forum: Selection and Installation of Wiring Systems
- Topic: Fraemohs Houses
- Replies: 2
- Views: 1604
Re: Fraemohs Houses
Have a read of 3.9.4.2 Basically if cables are installed within 50mm within a wall, floor, ceiling or roof they need protection in accordance with 3.9.4.4 unless you meet the exception in 3.9.4.2 that it can be within 50mm and not need protection if able to move freely out of the 50mm zone on chance...
- Thu Aug 19, 2021 3:41 pm
- Forum: Standards and Legislation
- Topic: Manufacturers Instructions - New installations
- Replies: 2
- Views: 1659
Re: Manufacturers Instructions - New installations
5.3.4 in 2005 is worded so confusingly, I see what you're saying though The way it says "grid side of ANY RCD" and the way the notes backed that logic up with the fact they indicate "An RCD is not to be placed between the consumers mains and the solar supply (see Clause 5.3.4)" still makes me feel l...
- Thu Aug 19, 2021 9:21 am
- Forum: Standards and Legislation
- Topic: Manufacturers Instructions - New installations
- Replies: 2
- Views: 1659
Manufacturers Instructions - New installations
ESR 59 (3) allows us to use MIs to maintain or replace as an alternative to following 3000 ESR 59 (2) only allows compliance with part 1 or 2 of 3000 ESR 14A allows us to rely on them as being electrically safe in certain situations outlined in (a) and (b) But can we use MIs as an alternative of com...
- Tue Aug 17, 2021 10:08 am
- Forum: Standards and Legislation
- Topic: Is a main switch actually part of mains work?
- Replies: 4
- Views: 2316
Re: Is a main switch actually part of mains work?
Very interesting read on both accounts, thanks Alec
- Tue Aug 17, 2021 7:12 am
- Forum: Standards and Legislation
- Topic: Is a main switch actually part of mains work?
- Replies: 4
- Views: 2316
Is a main switch actually part of mains work?
Just been looking at definitions in ESRs and although a lot of people talk about main switches as they are part of mains work it's actually just the connection of mains to them that is mains work? Correct? Just curious in regards to inspection of mains work if things such as main switch height or lo...
- Mon Aug 16, 2021 10:21 am
- Forum: Appliances
- Topic: Used appliances - how to cover yourself?
- Replies: 3
- Views: 5010
Re: Used appliances - how to cover yourself?
Yeah, also thought that was the best path also despite the "when sold or offered for sale"
I went on to look at 5761 but 2.4.1 talked a lot about plugs but I wasn't sure if this meant it had to have one or simply if it had one it had to conform etcetc
I went on to look at 5761 but 2.4.1 talked a lot about plugs but I wasn't sure if this meant it had to have one or simply if it had one it had to conform etcetc
- Sun Aug 15, 2021 2:53 pm
- Forum: Appliances
- Topic: Used appliances - how to cover yourself?
- Replies: 3
- Views: 5010
Used appliances - how to cover yourself?
In regards to used appliances, when a customer asks for a 2nd hand or similar appliance to be installed, what must or can we do to ensure the appliances is electrically safe, more so when the appliance isn't connected via or doesn't come with a plug on it? I've had a look through ESRs (mainly 26, 80...
- Sun Aug 15, 2021 12:11 pm
- Forum: Earthing and Bonding
- Topic: 5.3.5.1 MEN location exceptions
- Replies: 9
- Views: 8029
5.3.5.1 MEN location exceptions
Under this clause there are exceptions for the MEN to not need be located on the main switchboard If using such exception, it doesn't mention any change of location for the MEC or other parts of the earthing system Would you still do everything else as normal in such a situation? Doesn't seem right ...
- Fri Aug 13, 2021 11:27 am
- Forum: Distribution, Networks & Metering
- Topic: Outbuilding definition
- Replies: 3
- Views: 4765
Re: Outbuilding definition
If the main switchboard is on the concrete plinth then all the outgoing feeds are submains
5.5.3.1 (b)(I) prevents there being more than one MEN link in the outbuilding
Outbuilding is definited by 1.4.69, I believe it meets this definition
Doesn't sound compliant to me
5.5.3.1 (b)(I) prevents there being more than one MEN link in the outbuilding
Outbuilding is definited by 1.4.69, I believe it meets this definition
Doesn't sound compliant to me
- Sun Aug 08, 2021 1:18 pm
- Forum: Standards and Legislation
- Topic: How long do we have to issue a CoC?
- Replies: 14
- Views: 8209
Re: How long do we have to issue a CoC?
This has stemmed from a conversation in regards to someone who had run cables, essentially prewiring a job but has left such job for whatever reason There is large argument between whether, simply running cables, requires a CoC, my thoughts, due to ESR65 and Schedule 1 are that this is PEW and will ...
- Sun Aug 08, 2021 9:07 am
- Forum: Protective Devices
- Topic: Oven replacement - RCD protection of socket outlet?
- Replies: 7
- Views: 8699
Oven replacement - RCD protection of socket outlet?
I've been asked to replace a wall oven with another The current oven is directly wired, the customer has asked if possible to add a socket outlet and flexible plug on the new one, no issues with this, 15A socket and plug I'm well aware of 2.6.3.1 Exception 3 but because this is an alteration to an e...
- Sat Aug 07, 2021 6:55 pm
- Forum: Standards and Legislation
- Topic: How long do we have to issue a CoC?
- Replies: 14
- Views: 8209
How long do we have to issue a CoC?
ESR74E "(2) The responsible person must, within 20 days after completing the work, pro- vide a copy of the certificate of compliance" But that only applies once work is completed Looking at ESR65 (3) and (4) work isn't completely until a CoC is issued, so until a CoC is issued then work isn't comple...
- Mon Aug 02, 2021 10:24 am
- Forum: Appliances
- Topic: Motor Overload - 4.13.2
- Replies: 2
- Views: 4540
Re: Motor Overload - 4.13.2
Thanks Alec, appreciate the confirmation
- Sun Aug 01, 2021 2:35 pm
- Forum: Appliances
- Topic: Motor Overload - 4.13.2
- Replies: 2
- Views: 4540
Motor Overload - 4.13.2
"Each electric motor having a rating exceeding 370 W shall be provided with
control equipment incorporating means of protection against overload of the
motor."
Does each need its own motor overload protection? Or can you use a single motor overload for multiple items?
control equipment incorporating means of protection against overload of the
motor."
Does each need its own motor overload protection? Or can you use a single motor overload for multiple items?
- Sat Jul 17, 2021 2:32 pm
- Forum: Protective Devices
- Topic: 2.6.3.1 Exception 3 - Can you apply this to gas appliances?
- Replies: 3
- Views: 4631
Re: 2.6.3.1 Exception 3 - Can you apply this to gas appliances?
Thank you, this is exactly what I thought If there's one thing I've learned from you (there's heaps actually haha) it's that the words matter, if they wanted it to apply to any cooking appliance, they would have just said cooking appliance, the fact that they used electric cooking appliance was what...
- Sat Jul 17, 2021 8:00 am
- Forum: Protective Devices
- Topic: 2.6.3.1 Exception 3 - Can you apply this to gas appliances?
- Replies: 3
- Views: 4631
2.6.3.1 Exception 3 - Can you apply this to gas appliances?
"This requirement need not apply to a socket-outlet or a connecting device specifically for the connection of a fixed or stationary electric cooking appliance, such as a range, oven or hotplate unit, provided that" Do we still consider a gas appliance as an electric cooking appliance due to it still...
- Mon Jul 12, 2021 2:10 pm
- Forum: Protective Devices
- Topic: Minimum of two RCDs when more than one FSC 2.6.2.4 (b) (ii)
- Replies: 3
- Views: 5055
Re: Minimum of two RCDs when more than one FSC 2.6.2.4 (b) (ii)
Thank you both, clears it up for me and it makes perfect sense when you explain the background to it
- Sat Jul 10, 2021 4:56 pm
- Forum: Protective Devices
- Topic: Minimum of two RCDs when more than one FSC 2.6.2.4 (b) (ii)
- Replies: 3
- Views: 5055
Minimum of two RCDs when more than one FSC 2.6.2.4 (b) (ii)
What are peoples views in regards to this? Does this apply as a minimum of 2 per switchboard? As in, 2 FSCs in a subboard require 2 RCDs? Or is this total taken as across the whole installation and provided there was already at least 1 on the MSB that the subboard could infact have 1 covering the mi...
- Sat Jul 10, 2021 12:28 pm
- Forum: Generators and Solar
- Topic: Section 4.5 - 4777.1-2016
- Replies: 11
- Views: 9560
Re: Section 4.5 - 4777.1-2016
I was wondering if MIs could be used in situations like this in accordance with ESR14A and obviously following all instructions because of as you said, standards don't always keep up with technology but it seems nothing in ESR59 and 61 allows for the use as such as an alternative to 3000 and if to p...
- Mon Jul 05, 2021 9:53 am
- Forum: Earthing and Bonding
- Topic: Requirements for screens of cables for interference
- Replies: 3
- Views: 5200
Re: Requirements for screens of cables for interference
When you say outside the scope of the wiring rules is that due to the fact you wouldn't consider it installation wiring?
- Sat Jul 03, 2021 10:48 pm
- Forum: Earthing and Bonding
- Topic: Requirements for screens of cables for interference
- Replies: 3
- Views: 5200
Requirements for screens of cables for interference
Just curious around what rules to apply for screens, such as those in screened instruments cables or other similar arrangements when the screen is there for preventing interference Would such be considered FEs? (Functional earths) They are not used for any protective purposes The main things I'm cur...
- Sat Jul 03, 2021 10:39 pm
- Forum: Generators and Solar
- Topic: Section 4.5 - 4777.1-2016
- Replies: 11
- Views: 9560
Re: Section 4.5 - 4777.1-2016
Thanks Alec, appreciated as always
- Thu Jul 01, 2021 7:55 pm
- Forum: Generators and Solar
- Topic: Section 4.5 - 4777.1-2016
- Replies: 11
- Views: 9560
Re: Section 4.5 - 4777.1-2016
I get what you're saying but I was reading it as 4.5 covers "Isolation Devices" in general, which it does but when the system is a PV system, that the requirements to follow are are specifically in 5033
- Wed Jun 30, 2021 9:54 pm
- Forum: Generators and Solar
- Topic: Section 4.5 - 4777.1-2016
- Replies: 11
- Views: 9560
Re: Section 4.5 - 4777.1-2016
"Where the energy source is a PV array, the isolation switches and isolation arrangements shall comply with the requirements of AS/NZS 5033." So you'd just follow what 5033 says in regards to this, problem is the cited version of 5033 which is the 2012 is more directed at string systems than micro s...
- Sat Jun 19, 2021 8:00 pm
- Forum: Switchboards
- Topic: Submain configuration
- Replies: 4
- Views: 5793
Re: Submain configuration
That's exactly what I thought, just the way you worded the part I highlighted made me feel you were implying that they did infact need to be done in a similar way to the PEN example
Thank you
Thank you
- Wed Jun 16, 2021 6:35 pm
- Forum: Switchboards
- Topic: Submain configuration
- Replies: 4
- Views: 5793
Re: Submain configuration
else the submain must be looped in & out; and all terminations done in such manner that continuity of A,N & E to DB2 cannot be broken by disconnecting any connections within DB1. I thought this was only a case for PEN conductors when submains used the outbuilding earthing clause, I can't find anyth...
- Thu Jun 03, 2021 4:41 pm
- Forum: Selection and Installation of Wiring Systems
- Topic: Green only heat shrink for earth's
- Replies: 6
- Views: 3012
Re: Green only heat shrink for earth's
Purely because that's what I'm being instructed to use
No other reason aside from that, my preference is to simply use green/yellow the whole way
No other reason aside from that, my preference is to simply use green/yellow the whole way
- Wed Jun 02, 2021 1:50 pm
- Forum: Selection and Installation of Wiring Systems
- Topic: Green only heat shrink for earth's
- Replies: 6
- Views: 3012
Re: Green only heat shrink for earth's
Further question in regards to this, I haven't seen green/yellow sleeving but green is very common It's also the prefered method for insulating N/S when used as an earth screen I don't believe this to be compliant but I have noticed 3.8.3.1 (b) says that the screen doesn't need to be indentified the...
- Sun May 30, 2021 9:27 am
- Forum: Selection and Installation of Wiring Systems
- Topic: Does 3.4.3 apply to earths?
- Replies: 4
- Views: 2767
Does 3.4.3 apply to earths?
Just curious of peoples views around parallel conductors and earths Seems to very much be directed at CCC and live conductors but the rules don't seem to exempt earths in any way My question stems from an example of 6mm² 2c+e, would it be compliant to parallel 2 cables, the live conductors meet the ...
- Sun May 16, 2021 9:44 am
- Forum: Switchboards
- Topic: Meterbox as BTS
- Replies: 4
- Views: 5208
Re: Meterbox as BTS
I think it's the fact that that exception only allows single insulation "provided that such cables are not exposed to touch during normal switching or meter-reading operations"
- Sun May 09, 2021 11:02 am
- Forum: General Electrical Discussions
- Topic: Bootlace Ferrules on standard non-flexible cables
- Replies: 3
- Views: 5210
Bootlace Ferrules on standard non-flexible cables
I absolutely love bootlaces and think they are a tidy and effective way to make terminations, I've used them a lot in switchboards on your standard stranded TPS (5 strand, 7 strand etc) Someone informed me the other day that this shouldn't be done I'm just curious if anyone has any information or do...
- Tue May 04, 2021 2:47 pm
- Forum: Switchboards
- Topic: Submain configuration
- Replies: 4
- Views: 5793
Submain configuration
I have an existing submain coming from a MSB to a DB What I have been asked to do is to extend this submain to another board, so having the 2, supplied via the one submain, which I can't see any issue at all But my issue is rather than continue the submain from the line side of the DB, they have ask...
- Wed Apr 28, 2021 10:21 am
- Forum: Selection and Installation of Wiring Systems
- Topic: Sap 7 or Gap 7 as the bedding materials for Underground unenclosed cables
- Replies: 8
- Views: 4135
Re: Sap 7 or Gap 7 as the bedding materials for Underground unenclosed cables
Is it sand or friable soil? Is it free from sharp stone?
If yes, then it's compliant
If not, then it's not
I'm not super familiar with the products but just had a look at what I could online and they do look like they probably meet the definition of sand or friable soil
If yes, then it's compliant
If not, then it's not
I'm not super familiar with the products but just had a look at what I could online and they do look like they probably meet the definition of sand or friable soil
- Wed Apr 28, 2021 10:15 am
- Forum: Standards and Legislation
- Topic: Certified Designs - ESR58
- Replies: 7
- Views: 3437
Re: Certified Designs - ESR58
Thanks team, I was just always under the impression there was more too it but interesting to know